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首页> 外文会议>International ITG Workshop on Smart Antennas >Spectral Efficiency of MIMO Millimeter-Wave Links with Single-Carrier Modulation for 5G Networks
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Spectral Efficiency of MIMO Millimeter-Wave Links with Single-Carrier Modulation for 5G Networks

机译：5G网络单载波调制MIMO毫米波链路的频谱效率

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Future wireless networks will extensively rely upon bandwidths centered on carrier frequencies larger than 10GHz. Indeed, recent research has shown that, despite the large pathloss, millimeter wave (mmWave) frequencies can be successfully exploited to transmit very large data-rates over short distances to slowly moving users. Due to hardware complexity and cost constraints, single-carrier modulation schemes, as opposed to the popular multi-carrier schemes, are being considered for use at mmWave frequencies. This paper presents preliminary studies on the achievable spectral efficiency on a wireless MIMO link operating at mmWave in a typical 5G scenario. Two different single-carrier modem schemes are considered, i.e. a traditional modulation scheme with linear equalization at the receiver, and a single-carrier modulation with cyclic prefix, frequency-domain equalization and FFT-based processing at the receiver. Our results show that the former achieves a larger spectral efficiency than the latter. Results also confirm that the spectral efficiency increases with the dimension of the antenna array, as well as that performance gets severely degraded when the link length exceeds 90-100 meters and the transmit power falls below 0dBW. Nonetheless, mmWave appear to be very suited for providing very large data-rates over short distances.
机译：未来的无线网络将广泛依赖以大于10GHz的载波频率为中心的带宽。确实，最近的研究表明，尽管路径损耗很大，但毫米波（mmWave）频率仍可以成功地用于在短距离内向移动缓慢的用户传输非常大的数据速率。由于硬件的复杂性和成本的限制，与流行的多载波方案相反，正在考虑将单载波调制方案用于毫米波频率。本文介绍了在典型5G场景中以mmWave运行的无线MIMO链路上可实现的频谱效率的初步研究。考虑了两种不同的单载波调制解调器方案，即在接收机处具有线性均衡的传统调制方案，以及在接收机处具有循环前缀，频域均衡和基于FFT的处理的单载波调制。我们的结果表明，前者比后者具有更大的光谱效率。结果还证实，频谱效率随天线阵列的尺寸而增加，并且当链路长度超过90-100米且发射功率降至0dBW以下时，性能会严重下降。尽管如此，mmWave似乎非常适合在短距离内提供非常大的数据速率。

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